package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.Dto.OrdersDto;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @author huhanzhao
 * @create 2022-11-12-11:37
 */
@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrdersService ordersService;
    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    @Transactional
    public void submit(Orders orders) {
        //获取用户id
        Long userId = BaseContext.getCurrentId();
        //查询当前用户购物车数据
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCartList = shoppingCartService.list(queryWrapper);
        if (shoppingCartList == null || shoppingCartList.size() == 0){
            throw new CustomException("购物车为空，下单失败");
        }

        //查询用户数据
        User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook == null){
            throw new CustomException("地址为空，下单失败");
        }
        long orderId = IdWorker.getId();//作为订单号

        //计算订单明细和订单总金额
        AtomicInteger amount = new AtomicInteger();
        List<OrderDetail> orderDetailList = shoppingCartList.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        //向订单表插入数据
        ordersService.save(orders);

        //向订单明细表插入数据
        orderDetailService.saveBatch(orderDetailList);
        //清空购物车数据
        shoppingCartService.remove(queryWrapper);
    }

    @Override
    public Page<OrdersDto> getPage(int page, int pageSize) {
        //分页构造器
        Page<OrdersDto> dtoPage = new Page<>(page,pageSize);
        //条件构造器
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Orders::getUserId,BaseContext.getCurrentId()).orderByDesc(Orders::getCheckoutTime);
        List<Orders> ordersList = ordersService.list(queryWrapper);

        List<OrdersDto> ordersDtoList = ordersList.stream().map((item) -> {
            Long ordersId = item.getId();
            LambdaQueryWrapper<OrderDetail> detailLambdaQueryWrapper = new LambdaQueryWrapper<>();
            detailLambdaQueryWrapper.eq(OrderDetail::getOrderId, ordersId);
            List<OrderDetail> DetailList = orderDetailService.list(detailLambdaQueryWrapper);
            OrdersDto ordersDto = new OrdersDto();
            BeanUtils.copyProperties(item, ordersDto);
            ordersDto.setOrderDetails(DetailList);
            return ordersDto;
        }).collect(Collectors.toList());
        dtoPage.setRecords(ordersDtoList);

        return dtoPage;
    }

    @Override
    public Page<Orders> page(int page, int pageSize,Long number,String beginTime,String endTime) {
      Page<Orders> pageInfo = new Page<>(page,pageSize);
      LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
      queryWrapper.like(number != null,Orders::getNumber,number)
      .gt(StringUtils.isNotEmpty(beginTime),Orders::getOrderTime,beginTime)
      .lt(StringUtils.isNotEmpty(endTime),Orders::getOrderTime,endTime);
      queryWrapper.orderByDesc(Orders::getCheckoutTime);
        Page<Orders> page1 = ordersService.page(pageInfo, queryWrapper);
        return page1;
    }

}
